<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
<style>
    *{
        padding: 0;
        margin: 0;
    }
    html,body{
        height: 100%;
    }
    .left,.right{
        width: 200px;
        height: 100%;
        background:yellow;
    }
    .left{
        float: left;
    }
    .right{
        float:right;
    }
    .center{
        height: 100%;
        background: blue;
        width: calc(100% - 400px);
        float: left;
    }
</style>
</head>
<body>
    <div class="left"></div>
    <div class="center"></div>
    <div class="right"></div>
</body>
</html>